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Answer Key: Immune System (Grades 3 to 5) for Educators
This answer key is part of the Teacher's Guide on Immune System for grades 3 to 5.
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Teacher's Guide: Respiratory System (Grades 9 to 12) for Educators
With the activities in this Teacher's Guide, students will learn how the respiratory system works as well as what they can do to encourage good respiratory health.
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Teacher's Guide: Mouth and Teeth (Grades 9 to 12) for Educators
These activities will help your students understand why it’s so important to adopt and maintain healthy oral hygiene habits.